Improper Authentication in nginx-ui - CVE-2026-84313
Published: August 14, 2026 / Updated: October 16, 2026
Vulnerability identifier: #VU142582
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84313
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to take over accounts persistently.
The vulnerability exists due to improper authentication in the TOTP and passkey enrolment endpoints when handling requests with only a valid JWT. A remote user can bind an attacker-controlled TOTP secret or register passkeys for the current user to take over accounts persistently.
Exploitation requires a stolen valid JWT for the victim account and affects users who have not yet enabled TOTP, while passkey registration can be performed multiple times.
Affected software
nginx-ui
How to mitigate CVE-2026-84313
Install security update from vendor's website.
nginx-ui - update to 2.3.10